Experimental launcher: Switcher buttons are larger and centered.

ui/app_list/views/contents_switcher_view.cc

Index: ui/app_list/views/contents_switcher_view.cc
diff --git a/ui/app_list/views/contents_switcher_view.cc b/ui/app_list/views/contents_switcher_view.cc
index cd6a25268b9c2c2d54364380a80f88237120b737..1f54ec93d202036c843af3196f09fe132c26c678 100644
--- a/ui/app_list/views/contents_switcher_view.cc
+++ b/ui/app_list/views/contents_switcher_view.cc
@@ -32,6 +32,9 @@ ContentsSwitcherView::~ContentsSwitcherView() {}
 
 void ContentsSwitcherView::AddSwitcherButton(int resource_id, int page_index) {
   views::ImageButton* button = new views::ImageButton(this);
+  button->SetMinimumImageSize(gfx::Size(kMinimumHeight, kMinimumHeight));
+  button->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
+                            views::ImageButton::ALIGN_MIDDLE);
   button->SetImage(
       views::CustomButton::STATE_NORMAL,
       ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(resource_id));